Adhesive layer equipped film-like pressure-sensitive sensor, touch pad, touch-input function equipped protective panel and electronic device, using the sensor
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United States of America Patent
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Oct 10, 2017
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app pub date -
Dec 27, 2013
filing date -
Jan 10, 2013
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Abstract
A film-like pressure-sensitive sensor capable of detecting a touch pressure in high accuracy, a touch pad, a protective panel having a touch-input function and an electronic device, all using the sensor. A film-like pressure-sensitive sensor with a frame-shaped adhesive layer on a rear face peripheral edge portion of the film-like pressure-sensitive sensor is provided. The film-like pressure-sensitive sensor includes a rectangular piezoelectric film, a detection electrode formed partially on a rear face of the piezoelectric film and a reference potential electrode formed on a front face of the piezoelectric film in such a manner as to be overlapped with the detection electrode. The detection electrode is formed continuously in a first frame-shaped region present across an inner boundary of the adhesive layer and a whole region adjacent to an inner side of the first frame-shaped region.
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